IHtmlHelper does not contain definition for Kendo .NET 7

[Johannes]

I am using AspNet Core MVC 7

I am trying to create a custom HTML helper outside of a razor view. I am using the IHtmlHelper in this scenario and unfortunately outside of a razor view I cannot do something like this:

var uploader = _helper.Kendo().Upload()
                .Name("uploadFiles")
                .Multiple(true)
                .HtmlAttributes(new { style = "margin: 15px 0 5px 0;" });

Compilation error:

Error	CS1061	'IHtmlHelper' does not contain a definition for'Kendo'
and no accessible extension method 'Kendo' accepting a first argument of 
type'IHtmlHelper' could be found (are you missing a using directive or an assembly reference?)
   

 

[Alexander]

Hi Johaness,

Thank you for reaching out.

Generally, the HtmlHelper is an ASP.NET Core View feature that its purpose is to only reside within the existing View layer of the application due to the MVC architecture pattern as a whole rather than be stored within a separate Action Method on the Controller layer.

Normally such an error will be observed within the view if the "Kendo.Mvc.UI" assembly is not referred to. For example:

@using Kendo.Mvc.UI

Kind Regards,
Alexander
Progress Telerik